Table 4. The results of the meta-analysis of the antimicrobial activity parameters of propolis extract microbial test and TBARs value for their application to livestock products
No | Parameter | N | SMD/d+ (RE 95% Cl) | p-value | I2 | p-value | Kendall’s τ | p-value |
1 | Antimicrobial activity | 182 | 4.05 (2.96, 5.13) | <0.05 | 95.32% | <0.05 | 0.025 | 0.862 |
2 | Microbial test | 188 | −1.20 (−1.69, −0.72) | <0.05 | 84.10% | <0.05 | −0.179 | 0.138 |
3 | TBARs | 132 | −1.62 (−2.27, −0.98) | <0.05 | 99.32% | <0.05 | 0.048 | 0.781 |
TBARs, thiobarbituric acid reactive substances; N, sample size; SMD/d+ (RE 95% Cl), standardized mean difference (true effect size) by random effect model with 95% of confident interval; I2, Inconsistency (percentage).